FEATURES: Graduated compression sleeves increase blood flow to the arm by dilating the player's arteries and by compressing the veins Increased blood flow means more oxygen which helps the player's arm feel rested and "live" throughout the game In addition to keeping your arm feeling "live", increased blood flow actually keeps you feeling cool and fresh while you play Reduce muscle and tendon vibration during the throwing motion, essentially keeping everything in place, which over time helps reduce the potential for injuries Graduated compression sleeves and leggings are used throughout sports to help with recovery after games and practices by removing lactic acid and increasing blood flow and oxygen delivery Arm sleeves are for playing and for post-game recovery. Simply wear the sleeve for an hour after playing and feel the difference ADDITIONAL DETAILS: